openmv显示图像
时间: 2024-07-20 12:01:15 浏览: 158
OpenMV是一款专为微控制器设计的开源机器视觉套件,它包含了一款嵌入式摄像头模块和一套简洁易用的Python编程环境。在OpenMV上显示图像通常涉及以下几个步骤:
1. **捕捉图像**:使用OpenMV提供的`Capture`类初始化摄像头,并调用`grab()`或`read()`函数获取一张帧。
```python
import sensor, image, time
sensor.reset() # Initialize the camera sensor.
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or other supported formats).
sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240).
while True:
img = sensor.snapshot() # Capture an image and store it in `img`.
```
2. **处理图像**:对图像进行滤波、裁剪、转换等操作,然后可以使用`show()`函数在屏幕或连接的显示器上实时预览。
```python
# 对图像做处理...
processed_img = img.threshold(200) # 示例:应用阈值处理
processed_img.draw_rectangle((10, 10, 100, 100)) # 绘制矩形
processed_img.show()
```
3. **保存图像**:如果你想保存图像到Micro SD卡或其他存储设备,可以用`save()`方法。
```python
img.save('image.jpg') # 保存为jpg文件
```
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